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TPS54292

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4.5 V to 18 V input, 1.2 MHz, 1.5 / 2.5 A dual synchronous step-down converter

Product details

Vin (min) (V) 4.5 Vin (max) (V) 18 Vout (min) (V) 0.8 Vout (max) (V) 14 Iout (max) (A) 2.5 Iq (typ) (mA) 1.8 Switching frequency (min) (kHz) 1200 Switching frequency (max) (kHz) 1200 Features Enable, Phase Interleaving, Synchronous Rectification Operating temperature range (°C) -40 to 145 Rating Catalog Regulated outputs (#) 2 Control mode current mode Duty cycle (max) (%) 78 Type Converter
Vin (min) (V) 4.5 Vin (max) (V) 18 Vout (min) (V) 0.8 Vout (max) (V) 14 Iout (max) (A) 2.5 Iq (typ) (mA) 1.8 Switching frequency (min) (kHz) 1200 Switching frequency (max) (kHz) 1200 Features Enable, Phase Interleaving, Synchronous Rectification Operating temperature range (°C) -40 to 145 Rating Catalog Regulated outputs (#) 2 Control mode current mode Duty cycle (max) (%) 78 Type Converter
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • 4.5-V to 18-V Input Range
  • Output Voltage Range 0.8 V to DMAX × VIN
  • Fully Integrated Dual Buck: 1.5 A and 2.5 A
  • Three Fixed Switching Frequency Versions:
    • TPS54290: 300 kHz
    • TPS54291: 600 kHz
    • TPS54292: 1.2 MHz
  • Integrated UVLO
  • 0.8 VREF With 1% Accuracy (0°C to 85°C)
  • Internal Soft Start:
    • TPS54290: 5.2 ms
    • TPS54291: 2.6 ms
    • TPS54292: 1.3 ms
  • Dual PWM Outputs 180° Out-of-Phase
  • Dedicated Enable for Each Channel
  • Current Mode Control for Simplified Compensation
  • External Compensation
  • Pulse-by-Pulse Overcurrent Protection, 2.2-A and 3.8-A Overcurrent Limit
  • Integrated Bootstrap Switch
  • Thermal Shutdown Protection at 145°C
  • 16-Pin PowerPAD™ HTSSOP Package
  • APPLICATIONS
    • Set-Top Boxes
    • Digital TVs
    • Power for DSP
    • Consumer Electronics

All other trademarks are the property of their respective owners

  • 4.5-V to 18-V Input Range
  • Output Voltage Range 0.8 V to DMAX × VIN
  • Fully Integrated Dual Buck: 1.5 A and 2.5 A
  • Three Fixed Switching Frequency Versions:
    • TPS54290: 300 kHz
    • TPS54291: 600 kHz
    • TPS54292: 1.2 MHz
  • Integrated UVLO
  • 0.8 VREF With 1% Accuracy (0°C to 85°C)
  • Internal Soft Start:
    • TPS54290: 5.2 ms
    • TPS54291: 2.6 ms
    • TPS54292: 1.3 ms
  • Dual PWM Outputs 180° Out-of-Phase
  • Dedicated Enable for Each Channel
  • Current Mode Control for Simplified Compensation
  • External Compensation
  • Pulse-by-Pulse Overcurrent Protection, 2.2-A and 3.8-A Overcurrent Limit
  • Integrated Bootstrap Switch
  • Thermal Shutdown Protection at 145°C
  • 16-Pin PowerPAD™ HTSSOP Package
  • APPLICATIONS
    • Set-Top Boxes
    • Digital TVs
    • Power for DSP
    • Consumer Electronics

All other trademarks are the property of their respective owners

The TPS54290, TPS54291, and TPS54292 devices are dual-output, fully synchronous buck converters capable of supporting applications with a minimal number of external components. It operates from a 4.5-V to 18-V input supply voltage, and supports output voltages as low as 0.8 V and as high as 90% of the input voltage.

Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. Channel 1 can provide up to 1.5 A of continuous current. Meanwhile, Channel 2 supports up to 2.5 A.

Current mode control simplifies the compensation. The external compensation adds flexibility for the user to choose different type of output capacitors.

180° out-of-phase operation reduces the ripple current through the input capacitor, providing the benefit of reducing input capacitance, alleviating EMI and increasing capacitor life.

The TPS54290, TPS54291, and TPS54292 devices are dual-output, fully synchronous buck converters capable of supporting applications with a minimal number of external components. It operates from a 4.5-V to 18-V input supply voltage, and supports output voltages as low as 0.8 V and as high as 90% of the input voltage.

Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. Channel 1 can provide up to 1.5 A of continuous current. Meanwhile, Channel 2 supports up to 2.5 A.

Current mode control simplifies the compensation. The external compensation adds flexibility for the user to choose different type of output capacitors.

180° out-of-phase operation reduces the ripple current through the input capacitor, providing the benefit of reducing input capacitance, alleviating EMI and increasing capacitor life.

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Technical documentation

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Type Title Date
* Data sheet TPS5429x 1.5-A and 2.5-A Dual, Fully-Synchronous Buck Converter With Integrated MOSFET datasheet (Rev. A) PDF | HTML 29 Dec 2016
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Understanding Thermal Dissipation and Design of a Heatsink 04 May 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS54291EVM-431 — 12V Input, 3.3V 1.5A and 1.2V and 2.5A Dual Sync Buck Converter Evaluation Module

The TPS54291EVM-431 evaluation module (EVM) is a dual synchronous buck converter providing fixed3.3V and 1.2V outputs at up to 1.5A and 2.5A respectively from a 12V bus. The EVM is designed to start-up from a single supply, so no additional bias voltages are require for start-up. The module uses (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS54292 TINA-TI Transient Reference Design

SLUM160.TSC (152 KB) - TINA-TI Reference Design
Simulation model

TPS54292 TINA-TI Transient Spice Model

SLUM161.ZIP (34 KB) - TINA-TI Spice Model
Simulation model

TPS54292 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM099A.ZIP (93 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Package Pins Download
HTSSOP (PWP) 16 View options

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